// Press Shift twice to open the Search Everywhere dialog and type `show whitespaces`,
// then press Enter. You can now see whitespace characters in your code.
public class Main {
    public static void main(String[] args) {
        Bank bank = new Bank();
        Thread account, cashier;
        account = new Thread(bank);
        cashier = new Thread(bank);
        account.setName("会计");
        account.setName("出纳");
        account.start();
        cashier.start();
    }
}